Technical Series, No. 13. 



U. S. DEPARTMENT OF AGRICULTURE, 



BXJ1?E^TJ aw KNTOIVIOLOGY. 



L. 0. HOWARD, Entomologist and Chief of Bureau. 



A PiEYISION OF THE TYPiOGLYPHIDiE 



OF THE 



UNIT E D S T A 'J ' E S 



NATHAN BANKS, 



Assistant. Entomologist. 



Issued November 14, 1906. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1906. 



